Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Noncontrolling Interests [Member]	Purchase Price Allocation Adjustments [Member]	Purchase Price Allocation Adjustments [Member] Noncontrolling Interests [Member]
Balance, at Dec. 31, 2011
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Purchase accounting adjustments as required under ASC 805 for the ProtectCELL acquisition								$ (5,255)	$ (5,255)
Balance, at Dec. 31, 2012 (Scenario, Previously Reported [Member])	150,970	207	(6,651)	97,641	(631)	49,817	10,587
Treasury Stock, Shares at Dec. 31, 2012 (Scenario, Previously Reported [Member])			(1,024,212)
Balance, Shares at Dec. 31, 2012 (Scenario, Previously Reported [Member])		20,710,370
Balance, at Dec. 31, 2012	145,715	207	(6,651)	97,641	(631)	49,817	5,332
Balance, Shares at Dec. 31, 2012	20,710,370	20,710,370
Treasury Stock, Shares at Dec. 31, 2012	(1,024,212)		(1,024,212)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	11,025					10,157	868
Other comprehensive loss	(2,855)				(2,840)		(15)
Dividends paid to non-controlling interests	(43)						(43)
Distributions to non-controlling interest partners	(720)						(720)
Stock-based compensation, shares		142,157
Stock-based compensation	1,033	1		1,032
Direct stock awards to employees		3,724
Shares issued for the Employee Stock Purchase Plan		26,019
Value for stock issued during the period for the Employee Stock Purchase Plan	152	1		151
Stock Issued During Period, Shares, Direct Stock Awards	29	0		29
Treasury stock purchased, net of issuances, shares			(199,970)
Treasury stock purchased, net of issuances, value	(1,372)		(1,363)
Stock Issued During Period, Value, Treasury Stock Reissued				(9)
Options exercised, shares		6,250
Options exercised	49	0		49
Balance, at Sep. 30, 2013	$ 153,013	$ 209	$ (8,014)	$ 98,893	$ (3,471)	$ 59,974	$ 5,422
Treasury Stock, Shares at Sep. 30, 2013	(1,224,182)		(1,224,182)
Balance, Shares at Sep. 30, 2013	20,888,520	20,888,520