CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
NET LOSS	$ (7,407)	$ (6,103)
Pension and other postretirement benefit plans:
Net actuarial loss, net of tax of: (2017 – $935; 2016 – $2,230)	(1,471)	(3,504)
Pension settlement expense, net of tax of: (2017 – $761; 2016 – $350)	1,196	550
Amortization of unrecognized net periodic benefit costs, net of tax of: (2017 – $401; 2016 – $437)
Net actuarial loss	660	714
Prior service credit	(29)	(29)
Interest rate swap and foreign currency translation:
Change in unrealized income (loss) on interest rate swap, net of tax of: (2017 – $88; 2016 – $353)	135	(546)
Change in foreign currency translation, net of tax of: (2017 – $76 ; 2016 – $371)	119	584
OTHER COMPREHENSIVE INCOME (LOSS), net of tax	610	(2,231)
TOTAL COMPREHENSIVE LOSS	$ (6,797)	$ (8,334)