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Goodwill and Intangible Assets (Details) (USD $)
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3 Months Ended | 6 Months Ended | 6 Months Ended | 12 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|---|
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Jun. 30, 2013
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Jun. 30, 2012
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Jun. 30, 2013
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Jun. 30, 2012
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Dec. 31, 2012
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Jun. 30, 2013
Customer relationships [Member]
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Dec. 31, 2012
Customer relationships [Member]
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Jun. 30, 2013
State licenses [Member]
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Dec. 31, 2012
State licenses [Member]
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| Goodwill and Intangible Assets [Line Items] | |||||||||
| Goodwill | $ 58,312,000 | $ 58,312,000 | $ 58,312,000 | ||||||
| State licenses | 7,727,000 | 7,727,000 | |||||||
| Customer relationships, Gross | 51,400,000 | 51,400,000 | |||||||
| Accumulated Amortization | (24,936,000) | (24,936,000) | (23,046,000) | (24,936,000) | (23,046,000) | ||||
| Customer relationships, Net | 26,464,000 | 28,354,000 | |||||||
| Balance, gross | 117,439,000 | 117,439,000 | 117,439,000 | ||||||
| Accumulated Amortization | (24,936,000) | (24,936,000) | (23,046,000) | (24,936,000) | (23,046,000) | ||||
| Balance, net | 92,503,000 | 92,503,000 | 94,393,000 | ||||||
| Useful Life | 15 years | 15 years | |||||||
| Impairment of goodwill and intangible assets | 0 | 0 | 0 | 0 | |||||
| Estimated amortization expenses for the next five years [Abstract] | |||||||||
| 2013 (remainder of the year) | 1,891,000 | 1,891,000 | |||||||
| 2014 | 3,276,000 | 3,276,000 | |||||||
| 2015 | 2,840,000 | 2,840,000 | |||||||
| 2016 | 2,461,000 | 2,461,000 | |||||||
| 2017 | $ 2,133,000 | $ 2,133,000 | |||||||