|
Commitments and Contingencies - Additional Information (Detail) (USD $)
|
3 Months Ended | 6 Months Ended | 1 Months Ended | 1 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Jul. 03, 2014
Subsequent Events [Member]
Boston [Member]
|
Mar. 31, 2010
Oklahoma City Economic Development Trust [Member]
|
Jun. 30, 2014
Oklahoma City Economic Development Trust [Member]
|
Dec. 31, 2013
Oklahoma City Economic Development Trust [Member]
|
Mar. 31, 2010
Oklahoma City Economic Development Trust [Member]
Minimum [Member]
Job
|
|
| Other Commitments [Line Items] | |||||||||
| Up-front job creation payment from Trust | $ 2,000,000 | ||||||||
| Number of jobs created within a 5 year period | 492 | ||||||||
| Average first year wage | 37,000 | ||||||||
| Term of agreement | 5 years | ||||||||
| Capital investment in the project | 15,000,000 | ||||||||
| Earned job creation payments | 1,800,000 | 1,500,000 | |||||||
| Operating lease expiration period | 2014 to 2019 | ||||||||
| Total future minimum lease payments | 13,660,000 | 13,660,000 | 1,300,000 | ||||||
| Operating lease rent expense | $ 800,000 | $ 500,000 | $ 1,400,000 | $ 900,000 | |||||