CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock Issued	Common Stock Treasury	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Balances at Dec. 31, 2015	$ 310,803	$ 140,503	$ (760,299)	$ 170,699	$ 1,236,355	$ (515,688)	$ 39,233
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(9,592)				(10,869)		1,277
Total other comprehensive income (loss), net of deferred income taxes of $124 and $(4,244) in 2017 and 2016, respectively	19,647					19,376	271
Amortization of unearned portion of stock-based compensation, net of forfeitures	1,475			1,475
Balances at Mar. 31, 2016	322,333	140,503	(760,299)	172,174	1,225,486	(496,312)	40,781
Increase (Decrease) in Stockholders' Equity
Adoption of new accounting standard (See Note 2)	397			1,106	(709)
Balances at Dec. 31, 2016	137,563	140,625	(760,391)	172,101	1,150,688	(606,722)	41,262
Increase (Decrease) in Stockholders' Equity
Net income (loss)	10,137				8,890		1,247
Total other comprehensive income (loss), net of deferred income taxes of $124 and $(4,244) in 2017 and 2016, respectively	17,385					16,999	386
Vesting of restricted stock units and other stock grants, net 7,254 shares in 2017	(53)	14	(53)	(14)
Amortization of unearned portion of stock-based compensation, net of forfeitures	3,104			3,104
Balances at Mar. 31, 2017	$ 168,533	$ 140,639	$ (760,444)	$ 176,297	$ 1,158,869	$ (589,723)	$ 42,895