Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Parent	Noncontrolling Interest	Comprehensive Income
Beginning balance (shares) at Dec. 31, 2016		21,646,614
Beginning balance (Total) at Dec. 31, 2016	$ 241,327
Beginning balance (NCI) at Dec. 31, 2016							$ 0
Beginning balance (Parent) at Dec. 31, 2016		$ 2	$ 99,353	$ (431)	$ 141,581	$ 241,327		$ 822
Net Income (Loss), Total	(16,856)
Net Income (Loss), Parent	(16,856)	0	0	0	(16,856)	(16,856)		0
Net Income (Loss), NCI	0						0
Other Comprehensive Income (Loss), Parent		$ 0	0	0	0	6,856		6,856
Other Comprehensive Income (Loss), NCI							0
Other Comprehensive Income (Loss), Total	6,856
Stock Issued During Period, Shares, Shares-based Compensation, Gross		138,035
Stock Issued During Period, Value, Restricted Stock Award, Gross	1,931	$ 0	1,931	0	0	1,931	0	0
Stock Issued During Period, Shares, New Issues		20,956,355
Stock Issued During Period, Value, New Issues	274,384	$ 2	274,382	0	0	274,384	0	0
Cash dividends on common stock	(6,426)	$ 0	0	0	(6,426)	(6,426)	0	0
Cash Acquired from Acquisition	95,284
Investment in Subsidiary - NCI	0
Ending Balance (shares) at Sep. 30, 2017		42,741,004
Ending Balance (Total) at Sep. 30, 2017	501,216
Ending Balance (Parent) at Sep. 30, 2017		$ 4	375,666	(431)	118,299	501,216		7,678
Ending balance (NCI) at Sep. 30, 2017							0
Reclassification due to adoption of ASU 2016-01	$ (9,338)
Beginning balance (shares) at Dec. 31, 2017	42,753,054	42,753,054
Beginning balance (Total) at Dec. 31, 2017	$ 537,125
Beginning balance (NCI) at Dec. 31, 2017	0						0
Beginning balance (Parent) at Dec. 31, 2017	537,125	$ 4	387,145	(431)	141,186	537,125		9,221
Net Income (Loss), Total	11,362
Net Income (Loss), Parent	11,361	0	0	0	11,361	11,361		0
Net Income (Loss), NCI	1						1
Other Comprehensive Income (Loss), Parent		$ 0	0	0	0	(22,923)		(22,923)
Other Comprehensive Income (Loss), NCI							0
Other Comprehensive Income (Loss), Total	(22,923)
Stock Issued During Period, Shares, Shares-based Compensation, Gross		157,525
Stock Issued During Period, Value, Restricted Stock Award, Gross	1,675	$ 0	1,675	0	0	1,675	0	0
Cash dividends on common stock	(7,699)	0	0	0	(7,699)	(7,699)	0	0
Cash Acquired from Acquisition	0	$ 0	0	0	0	0		0
Investment in Subsidiary - NCI	$ 20,000						20,000
Ending Balance (shares) at Sep. 30, 2018	42,910,579	42,910,579
Ending Balance (Total) at Sep. 30, 2018	$ 548,878
Ending Balance (Parent) at Sep. 30, 2018	528,877	$ 4	388,820	(431)	154,186	528,877		(13,702)
Ending balance (NCI) at Sep. 30, 2018	20,001						20,001
Reclassification due to adoption of ASU 2016-01	$ 9,338	$ 0	$ 0	$ 0	$ 9,338	$ 9,338	$ 0	$ 0