Stock Plans and Other Incentives (Details Textual) (USD $)	3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		1 Months Ended		9 Months Ended				9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Sep. 30, 2012 Non-employee directors [Member]	Sep. 30, 2011 Non-employee directors [Member]	Sep. 30, 2012 Non-employee directors [Member]	Sep. 30, 2011 Non-employee directors [Member]	Sep. 30, 2012 RSU [Member] Employee	Sep. 30, 2011 RSU [Member] Employee	Sep. 30, 2012 RSU [Member] Employee	Sep. 30, 2011 RSU [Member] Employee	Feb. 29, 2012 RSU [Member] Employees [Member]	Mar. 31, 2011 RSU [Member] Employees [Member]	Sep. 30, 2012 RSU [Member] Non-employee directors [Member]	Sep. 30, 2011 RSU [Member] Non-employee directors [Member]	Sep. 30, 2012 Money option [Member]	Dec. 31, 2011 Money option [Member]	Sep. 30, 2012 Maximum [Member] RSU [Member]	Sep. 30, 2012 Minimum [Member] RSU [Member]
Stock Plans and Other Incentives (Textual) [Abstract]
Expiration period of the awards granted under the company's incentive plans												10 years
Vesting period of stock awards for employees																				5 years	3 years
Outstanding in-the-money options																		53,172	53,172
Number of common stock delivered used to settle minimum employee withholding tax obligations										1,202	1,207	84,367	44,019
Number of employees withholding tax obligations										1	1	16	14
Employee withholding tax obligations approx amount										$ 13,000	$ 11,000	$ 851,000	$ 352,000
Common stock delivered, net										2,132	2,126	133,518	133,809
Share Price	$ 11.44		$ 11.44		$ 9.12					$ 11.44	$ 8.86	$ 11.44	$ 8.86
RSUs granted to employees														143,783	214,135	21,678	29,364
Weighted average grant date fair value														$ 10.05	$ 7.41	$ 9.19	$ 8.09
Number of months after the termination of service, RSUs delivered to non-employee directors																6 months
Non-cash compensation expense			1,666,866	1,537,074		46,000	69,000	176,000	226,000	501,000	522,000	1,667,000	1,537,000
Vesting Rights												RSUs vest one-third a year over three years
Stock Plans and Other Incentives (Additional Textual) [Abstract]
Liability for option cancellations amount	364,000		364,000		241,000
Recorded compensation (benefit) expense	$ 97,000	$ 76,000	$ 123,000	$ 130,000