Goodwill and Intangible Assets (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012 Segment	Dec. 31, 2011
Goodwill and intangible assets (Textual) [Abstract]
Aggregate amount of goodwill acquired	$ 36,600,000
Aggregate amount of impairment	17,100,000
Estimated fair value of goodwill exceeds from its carrying value	12.00%
Goodwill impairment charges	0
Amortization expense of finite life intangible assets	331,000	441,000
Amortization expense of finite life intangibles for 2013	371,000
Amortization expense of finite life intangibles for 2014	274,000
Amortization expense of finite life intangibles for 2015	230,000
Amortization expense of finite life intangibles for 2016	171,000
Amortization expense of finite life intangibles for 2017	171,000
Number of reporting units not considered for impairment of goodwill	3
Assessment of qualitative factors of goodwill	As a result of the assessment of these qualitative factors, the Company has concluded that it is more likely than not that the fair values of three of the four reporting units with goodwill as of December 31, 2012 exceed the carrying values of these units.
Indefinite life intangible asset impairment charge	$ 0	$ 0
Estimated fair value exceeds from its carrying value	19.00%