Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings (Deficit) [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2016	$ 149,834	$ 12,271	$ 151,089	$ 45,443	$ (60,885)	$ 1,916
Stock-based compensation	1,555		1,555
Comprehensive (loss) income:
Net (loss) income	(11,302)			(12,089)		787
Other comprehensive (loss) income	22,330				22,213	117
Comprehensive (loss) income	11,028					904
Impact from adoption of ASU 2018-02 (Note 1)	0			6,088	(6,088)
Issuance of common stock including excess tax benefits of $0	438	90	348
Cash dividends ($0.09 per share)	(1,094)			(1,094)
Ending Balance at Dec. 31, 2017	161,761	12,361	152,992	38,348	(44,760)	2,820
Impact from adoption of ASU 2016-01 (Note 1) at Dec. 31, 2017	0			632	(632)
Balance January 1, 2018, adjusted at Dec. 31, 2017	161,761	12,361	152,992	38,980	(45,392)	2,820
Stock-based compensation	1,539		1,539
Debt-to-equity conversion (Note 8)	872					872
Comprehensive (loss) income:
Net (loss) income	(67,476)			(69,335)		1,859
Other comprehensive (loss) income	(4,219)				(4,042)	(177)
Comprehensive (loss) income	(71,695)					1,682
Issuance of common stock including excess tax benefits of $0	492	134	358
Ending Balance at Dec. 31, 2018	$ 92,969	$ 12,495	$ 154,889	$ (30,355)	$ (49,434)	$ 5,374