|
Commitments and Contingencies - Lease Narrative (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
Sep. 30, 2013
|
Sep. 30, 2012
|
Sep. 30, 2013
|
Sep. 30, 2012
|
Dec. 31, 2012
|
Sep. 30, 2013
Capital Lease Obligations
Minimum
|
Sep. 30, 2013
Capital Lease Obligations
Maximum
|
Dec. 31, 2011
Capital Addition Purchase Commitments
Capital Lease Obligations
|
Sep. 30, 2013
Maintenance and Support
|
Dec. 31, 2012
Maintenance and Support
|
|
| Leased Assets [Line Items] | ||||||||||
| Debt interest rate | 1.80% | 4.00% | ||||||||
| Debt face amount | $ 3.1 | |||||||||
| Recorded unconditional purchase obligation | 0.4 | 1.6 | ||||||||
| Rent expense | 1.3 | 1.1 | 4.0 | 3.1 | ||||||
| Deferred rent credit | 0.5 | 0.5 | 0.5 | |||||||
| Sales and excise tax payable, current | $ 0.4 | $ 0.4 | $ 0.4 | |||||||