Income Taxes (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2012
Reconciliation of unrecognized tax benefits, which are classified as other current assets
Balance at the beginning of the period	$ 1,245,000
Additions based on tax positions of prior years	181,000
Reductions based on tax positions of prior years	(133,000)
Balance at the end of the period	1,293,000
Impact of unrecognized tax benefits, if recognized	$ 1,300,000