Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2018
Cash flows from operating activities:
Net loss	$ (15,197)	$ (18,495)
Adjustments to reconcile net loss to cash provided by operating activities:
Depreciation and amortization of property and equipment and amortization of intangible assets	33,440	17,992
Gain on termination of capital lease	(2,535)	0
Loss on write-off of property and equipment	0	64
Amortization of debt issuance costs included in interest expense	2,688	2,035
Provision for doubtful accounts	1,213	991
Provision for inventory (recovery) reserve	376	(392)
Stock-based compensation and expenses	1,726	2,279
Change in fair value of interest rate derivatives	142	157
Accretion and PIK interest expense added to note payable	1,034	1,303
Debt conversion expense and loss on extinguishment of notes payable	(5,415)	(4,504)
Changes in operating assets and liabilities:
Accounts receivable	(2,186)	14,870
Inventory	511	737
Unbilled revenue	(85)	(1,144)
Prepaid and other assets	1,873	2,934
Accounts payable and accrued expenses	5,932	(3,316)
Deferred revenue	(2,648)	(2,122)
Net cash provided by operating activities	31,699	22,397
Cash flows from investing activities:
Purchases of property and equipment	(481)	(925)
Purchases of intangible assets	(5)	(6)
Net cash used in investing activities	(486)	(931)
Cash flows from financing activities:
Payments of notes payable	(53,088)	(41,729)
Net repayments under revolving credit agreement	(2,328)	(11,372)
Proceeds from issuance of notes payable	5,525	10,000
Repurchase of Class A common stock	0	(163)
Issuance of Class A common stock in exchange for the CEO's Second Lien Loans	0	28,031
Principal payments on capital leases	(224)	(66)
Payments of debt issuance costs	(2,035)	(781)
Capital contributions from noncontrolling interest	39	0
Change in restricted cash balances	7,983	0
Net cash used in financing activities	(44,128)	(16,080)
Net change in cash and cash equivalents	(12,915)	5,386
Cash and cash equivalents at beginning of year		12,566
Cash and cash equivalents at end of year	$ 12,566	$ 17,952