|
Basis of Presentation and Significant Accounting Policies (Details) (USD $)
In Millions, unless otherwise specified |
9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | 3 Months Ended | 9 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Sep. 30, 2013
Customer Concentration Risk [Member]
Customer
|
Sep. 30, 2012
Customer Concentration Risk [Member]
Customer
|
Dec. 31, 2012
Customer Concentration Risk [Member]
Customer
|
Sep. 30, 2013
Revenues [Member]
Customer Concentration Risk [Member]
Customer 1 [Member]
|
Sep. 30, 2012
Revenues [Member]
Customer Concentration Risk [Member]
Customer 1 [Member]
|
Sep. 30, 2013
Revenues [Member]
Customer Concentration Risk [Member]
Customer 2 [Member]
|
Sep. 30, 2012
Revenues [Member]
Customer Concentration Risk [Member]
Customer 2 [Member]
|
Sep. 30, 2013
Accounts Receivable [Member]
Customer Concentration Risk [Member]
Customer 1 [Member]
|
Dec. 31, 2012
Accounts Receivable [Member]
Customer Concentration Risk [Member]
Customer 1 [Member]
|
Sep. 30, 2013
Accounts Receivable [Member]
Customer Concentration Risk [Member]
Customer 2 [Member]
|
Dec. 31, 2012
Accounts Receivable [Member]
Customer Concentration Risk [Member]
Customer 2 [Member]
|
Sep. 30, 2012
Property equipment building and leasehold improvements [Member]
|
Sep. 30, 2012
Property equipment building and leasehold improvements [Member]
|
|
| Long-Lived Assets to be Abandoned [Line Items] | |||||||||||||
| Accelerated depreciation | $ 0.1 | $ 1.4 | |||||||||||
| Impairment loss | $ 0.8 | ||||||||||||
| Concentration Risk [Line Items] | |||||||||||||
| Number of major customers | 2 | 2 | 2 | ||||||||||
| Concentration risk, percentage (in hundredths) | 57.00% | 45.00% | 30.00% | 35.00% | 27.00% | 58.00% | 50.00% | 35.00% | |||||