Supplemental Disclosure of Noncash Investing and Financing Activities - Supplemental Disclosure of Noncash Investing and Financing Activities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Investing activities:
Acquisition-related contingent consideration	$ 542	$ 4,809	$ 1,539
Common stock issued in connection with the acquisition		2,243	1,634
Capital expenditures incurred not yet paid	3,874	9,081	407
Stock-based compensation included in capital expenditures	195	307	130
Unpaid debt issuance costs included in accrued liabilities		734
Unpaid share issuance cost included in accrued liabilities		60
Capitalized interest expense included in accrued liabilities	894	1,389
Gateway and components recorded in inventory in prior years which were used for construction under satellite network and other equipment			175
Financing activities:
Common stock issued as form of payment for MPUs	358	213
Series A convertible preferred stock dividend paid in kind	$ 36	$ 37	$ 59