Condensed Consolidated Statement of Stockholders' Equity (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common stock	Retained earnings	Accumulated other comprehensive income (loss), net
Beginning balance at Dec. 31, 2012	$ 198,938	$ 121,832	$ 75,362	$ 1,744
Beginning balance, shares at Dec. 31, 2012		15,118,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted and unrestricted stock awards issued, net of forfeitures, shares		100,000
Restricted and unrestricted stock awards issued, net of forfeitures	0	0	0	0
Stock option compensation expense	55	55
Exercise of stock options (including tax effect from nonqualified stock options), shares	15,997	17,000
Exercise of stock options (including tax effect from nonqualified stock options)	166	166
Restricted stock compensation expense	926	926
Excess tax benefits from restricted stock	72	72
Common stock repurchased and retired, shares		(557,000)
Common stock repurchased and retired	(8,820)	(8,820)
Net income	8,865		8,865
Other comprehensive loss, net of tax	(2,426)			(2,426)
Common stock issuance, shares		1,533,000
Common stock issued in acquisition	24,195	24,195
Cash dividends declared on common stock ($0.34 per share)	(5,376)		(5,376)
Ending balance at Sep. 30, 2013	$ 216,595	$ 138,426	$ 78,851	$ (682)
Ending balance, shares at Sep. 30, 2013		16,211,000