Income Taxes (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 2,781,000	$ 2,509,000	$ 4,133,000	$ 2,917,000
Effective tax rate	24.70%	30.00%	24.50%	24.90%
Unrecognized tax benefits, income tax penalties expense		400,000		400,000
Gross unrecognized tax benefits	3,700,000		3,700,000
Unrecognized tax benefits that would impact effective rate	3,200,000		3,200,000
Decrease in unrecognized tax benefits is reasonably possible in next 12 months	200,000		200,000
Accrued interest and penalties	200,000		200,000		100,000
Unrecognized tax benefits, income tax interest and penalties accrued, current	1,500,000		1,500,000
Unrecognized tax benefits, income tax penalties and interest accrued, noncurrent	$ 2,200,000		$ 2,200,000