Annual report pursuant to Section 13 and 15(d)

FAIR VALUE MEASUREMENTS. (Details)

v3.8.0.1
FAIR VALUE MEASUREMENTS. (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Assets:    
Assets $ 14,956 $ 13,401
Liabilities:    
Liabilities   (4,766)
Warrants [Member]    
Liabilities:    
Liabilities   (651)
Defined Benefit Plan Assets Fixed Income [Member]    
Assets:    
Assets $ 5,664 $ 5,481
Liabilities:    
Benefit plan allocation percentage 41.00% 44.00%
Defined Benefit Plan Assets International Equity [Member]    
Assets:    
Assets $ 2,528 $ 2,006
Liabilities:    
Benefit plan allocation percentage 18.00% 16.00%
Defined Benefit Plan Assets Small/Mid U.S. Equity [Member]    
Assets:    
Assets $ 2,018 $ 1,802
Liabilities:    
Benefit plan allocation percentage 14.00% 15.00%
Derivative Financial Instrument [Member]    
Assets:    
Assets $ 998 $ 978
Liabilities:    
Liabilities (2,307) (4,115)
Defined Benefit Plan Assets Large U.S. Equity [Member]    
Assets:    
Assets $ 3,748 $ 3,134
Liabilities:    
Benefit plan allocation percentage 27.00% 25.00%
Level 3 [Member]    
Assets:    
Assets
Liabilities:    
Liabilities   (651)
Level 3 [Member] | Warrants [Member]    
Liabilities:    
Liabilities   (651)
Level 3 [Member] | Defined Benefit Plan Assets Fixed Income [Member]    
Assets:    
Assets
Level 3 [Member] | Defined Benefit Plan Assets International Equity [Member]    
Assets:    
Assets
Level 3 [Member] | Defined Benefit Plan Assets Small/Mid U.S. Equity [Member]    
Assets:    
Assets
Level 3 [Member] | Derivative Financial Instrument [Member]    
Assets:    
Assets
Liabilities:    
Liabilities
Level 3 [Member] | Defined Benefit Plan Assets Large U.S. Equity [Member]    
Assets:    
Assets
Level 2 [Member]    
Assets:    
Assets 13,958 12,423
Liabilities:    
Liabilities  
Level 2 [Member] | Warrants [Member]    
Liabilities:    
Liabilities  
Level 2 [Member] | Defined Benefit Plan Assets Fixed Income [Member]    
Assets:    
Assets 5,664 5,481
Level 2 [Member] | Defined Benefit Plan Assets International Equity [Member]    
Assets:    
Assets 2,528 2,006
Level 2 [Member] | Defined Benefit Plan Assets Small/Mid U.S. Equity [Member]    
Assets:    
Assets 2,018 1,802
Level 2 [Member] | Derivative Financial Instrument [Member]    
Assets:    
Assets
Liabilities:    
Liabilities  
Level 2 [Member] | Defined Benefit Plan Assets Large U.S. Equity [Member]    
Assets:    
Assets 3,748 3,134
Level 1 [Member]    
Assets:    
Assets 998 978
Liabilities:    
Liabilities (2,307) (4,115)
Level 1 [Member] | Warrants [Member]    
Liabilities:    
Liabilities  
Level 1 [Member] | Defined Benefit Plan Assets Fixed Income [Member]    
Assets:    
Assets
Level 1 [Member] | Defined Benefit Plan Assets International Equity [Member]    
Assets:    
Assets
Level 1 [Member] | Defined Benefit Plan Assets Small/Mid U.S. Equity [Member]    
Assets:    
Assets
Level 1 [Member] | Derivative Financial Instrument [Member]    
Assets:    
Assets 998 978
Liabilities:    
Liabilities (2,307) (4,115)
Level 1 [Member] | Defined Benefit Plan Assets Large U.S. Equity [Member]    
Assets:    
Assets