Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net (loss) income	$ (12,999)	$ (4,525)	$ 4,759
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Change in allowance for doubtful accounts	676	427	26
Depreciation and amortization	26,571	10,856	6,001
Impairment charges - satellite network	12,748	605
Change in the fair values of acquisitions-related contingent consideration	(1,606)	(2,132)	(1,003)
Amortization of the fair value adjustment related to StarTrak warranty liabilities	(12)	(164)	(47)
Amortization and write-off of deferred debt fees	464	869
Stock-based compensation	4,620	3,610	2,973
Foreign exchange (gains) losses	(413)	(227)	32
Amortization of premium on marketable securities			187
Increase in fair value of indemnification assets		(126)	(253)
Loss on settlement agreement in connection with the indemnification assets		97
Deferred income taxes	825	(276)	724
Other		173
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	8,045	(6,882)	(2,698)
Inventories	(7,953)	(5,291)	729
Prepaid expenses and other assets	(449)	(173)	(444)
Accounts payable and accrued liabilities	(2,995)	5,353	(1,465)
Deferred revenue	(1,126)	611	(1,032)
Other liabilities	(313)	397	265
Net cash provided by operating activities	26,083	3,202	8,754
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired	(141,575)	(28,883)	(7,076)
Capital expenditures	(70,017)	(45,543)	(37,296)
Cash held for acquisition	123,000	(123,000)
Proceeds received from settlement agreement in connection with indemnification assets		691
Proceeds from warranty claim on acquired inventory		167
Purchases of marketable securities			(51,448)
Proceeds from maturities of marketable securities			79,230
Change in restricted cash		1,000
Net cash used in investing activities	(88,592)	(195,568)	(16,590)
Cash flows from financing activities:
Proceeds received from issuance of common stock in connection with public offerings, net of underwriters’ discounts and commissions and offering costs		114,798
Proceeds received from issuance of long-term debt	10,000	150,000	45,000
Cash paid for debt issuance costs	(942)	(3,652)	(1,387)
Proceeds received from exercise of stock options	244	101	1,825
Principal payment of long-term debt	(10,000)	(45,000)	(3,450)
Principal payments of capital leases		(163)	(203)
Payment of deferred purchase consideration	(1,106)	(25)
Net cash (used in) provided by financing activities	(1,804)	216,059	41,785
Effect of exchange rate changes on cash and cash equivalents	(175)	(482)	(378)
Net (decrease) increase in cash and cash equivalents	(64,488)	23,211	33,571
Cash and cash equivalents:
Beginning of year	91,565	68,354	34,783
End of year	27,077	91,565	68,354
Cash paid for:
Interest	9,005	3,324	4,262
Income taxes	$ 723	$ 692	$ 1,404