Other Liabilities - Accrued and other liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Accrued and other liabilities	$ 17,719	$ 8,916
Accrued compensation and related taxes
Accrued and other liabilities	5,285	5,471
Deferred compensation
Accrued and other liabilities	3,515	0
Deferred revenue
Accrued and other liabilities	3,494	1,308
Insurance
Accrued and other liabilities	2,535	0
Professional services
Accrued and other liabilities	264	763
Accrued fuel and rig-related charges
Accrued and other liabilities	2,076	601
Tax-related
Accrued and other liabilities	120	238
Other
Accrued and other liabilities	$ 430	$ 535