Other Liabilities - Accrued and other liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Accrued and other liabilities	$ 13,896	$ 7,775
Accrued compensation and related taxes
Accrued and other liabilities	5,467	4,207
Deferred revenue
Accrued and other liabilities	4,331	857
Insurance
Accrued and other liabilities	1,327	310
Professional services
Accrued and other liabilities	404	608
Accrued fuel and rig-related charges
Accrued and other liabilities	1,498	901
Tax-related
Accrued and other liabilities	253	385
Other
Accrued and other liabilities	$ 616	$ 507