Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital & Accumulated Other Comprehensive Loss	Retained Earnings	Adoption of current expected credit loss (CECL)	Adoption of current expected credit loss (CECL) Retained Earnings
Beginning balance (shares) at Dec. 31, 2018		19,389,066
Beginning balance at Dec. 31, 2018	$ 274,554	$ 2	$ 89,258	$ 185,294
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	742			742
Purchase of common stock for tax withholding (shares)		(67,648)
Purchase of common stock for tax withholding	(1,011)		(1,011)
Amortization of stock-based compensation	528		528
Cash dividends declared	(2,479)			(2,479)
Common stock repurchase program including commissions (shares)		(131,012)
Common stock repurchase program including commissions	(1,810)		(1,810)
Issuance of restricted stock under the Equity Plan and other (shares)		13,650
Issuance of restricted stock under the 2012 Equity Plan and other	70			70
Cumulative translation adjustment	(60)		(60)
Ending balance (shares) at Mar. 31, 2019		19,204,056
Ending balance at Mar. 31, 2019	270,534	$ 2	86,905	183,627
Beginning balance (shares) at Dec. 31, 2018		19,389,066
Beginning balance at Dec. 31, 2018	274,554	$ 2	89,258	185,294
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	72
Cumulative translation adjustment	(93)
Ending balance (shares) at Jun. 30, 2019		19,221,966
Ending balance at Jun. 30, 2019	268,500	$ 2	88,021	180,477
Beginning balance (shares) at Mar. 31, 2019		19,204,056
Beginning balance at Mar. 31, 2019	270,534	$ 2	86,905	183,627
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(670)			(670)
Amortization of stock-based compensation	1,029		1,029
Cash dividends declared	(2,480)			(2,480)
Issuance of restricted stock under the Equity Plan and other (shares)		17,910
Issuance of restricted stock under the 2012 Equity Plan and other	120		120
Cumulative translation adjustment	(33)		(33)
Ending balance (shares) at Jun. 30, 2019		19,221,966
Ending balance at Jun. 30, 2019	268,500	$ 2	88,021	180,477
Beginning balance (shares) at Dec. 31, 2019		19,071,614
Beginning balance at Dec. 31, 2019	250,094	$ 2	85,273	164,819	$ (365)	$ (365)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(4,539)			(4,539)
Purchase of common stock for tax withholding (shares)		(79,981)
Purchase of common stock for tax withholding	(903)		(903)
Amortization of stock-based compensation	1,182		1,182
Cash dividends declared	(2,488)			(2,488)
Issuance of restricted stock under the Equity Plan and other (shares)		1,918
Issuance of restricted stock under the 2012 Equity Plan and other	19			19
Cumulative translation adjustment	(220)		(220)
Ending balance (shares) at Mar. 31, 2020		18,993,551
Ending balance at Mar. 31, 2020	242,780	$ 2	85,332	157,446
Beginning balance (shares) at Dec. 31, 2019		19,071,614
Beginning balance at Dec. 31, 2019	250,094	$ 2	85,273	164,819	$ (365)	$ (365)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(780)
Cumulative translation adjustment	(117)
Ending balance (shares) at Jun. 30, 2020		19,023,795
Ending balance at Jun. 30, 2020	245,681	$ 2	86,963	158,716
Beginning balance (shares) at Mar. 31, 2020		18,993,551
Beginning balance at Mar. 31, 2020	242,780	$ 2	85,332	157,446
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	3,759			3,759
Amortization of stock-based compensation	1,362		1,362
Cash dividends declared	(2,491)			(2,491)
Issuance of restricted stock under the Equity Plan and other (shares)		30,244
Issuance of restricted stock under the 2012 Equity Plan and other	168		166	2
Cumulative translation adjustment	103		103
Ending balance (shares) at Jun. 30, 2020		19,023,795
Ending balance at Jun. 30, 2020	$ 245,681	$ 2	$ 86,963	$ 158,716