Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Consolidated net income	$ 13,094	$ 2,548	$ 11,766	$ 7,379
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation	6,189	5,346	24,359	19,541
Amortization of Intangible Assets	1,098	30	2,649	104
Stock-based compensation to employees and directors	968	778	3,716	3,890
Deferred income taxes	7,684	1,698	7,469	3,122
Amortization of debt issuance costs	0	39	(18)	39
Loss on investment in precious metals	0	0	1,183	1,269
Loss on investment in cryptocurrency	0	117	35	117
Ineffective portion of loss on cash flow hedge	0	0	124	0
Redemption Premium	0	0	850	0
Other	13	10	12	7
Changes in operating assets and liabilities, net of acquisitions:
Restricted cash	0	0	0	1,000
Accounts receivable, net	(951)	3,312	(800)	185
Inventories, net	603	1,741	5,028	(1,694)
Prepaid inventories, net	109	(960)	2,972	(2,509)
Prepaids and other current assets	3,107	1,244	525	(385)
Other long-term assets, net	12	346	(268)	151
Accounts payable	(45,515)	(45,249)	10,216	8,312
Accrued liabilities	(13,336)	(10,359)	(7,130)	18,966
Deferred revenue	(8,132)	(4,709)	(930)	6,899
Other long-term liabilities	554	979	1,344	1,031
Net cash (used in) provided by operating activities	(34,503)	(43,089)	63,102	67,424
Cash flows from investing activities:
Purchases of marketable securities	(4)	(3)	(15)	(14)
Sales of marketable securities	27	35	27	35
Purchases of intangible assets	(1)	(32)	(194)	(145)
Investment in precious metals	0	0	0	(2,496)
Investment in cryptocurrency	0	0	0	(300)
Equity method investment	0	(95)	(57)	(345)
Disbursement of note receivable	(2,850)	0	(7,850)	0
Cost method investments	0	(5,000)	(2,000)	(5,000)
Acquisitions of businesses, net of cash acquired	1,177	0	(9,424)	0
Expenditures for fixed assets, including internal-use software and website development	(19,592)	(6,612)	(72,493)	(41,763)
Proceeds from sale of fixed assets	7	0	46	43
Net cash used in investing activities	(21,236)	(11,707)	(91,960)	(49,985)
Cash flows from financing activities:
Payments on capital lease obligations	0	(362)	0	(687)
Paydown on direct financing arrangement	(54)	(75)	(288)	(289)
Repayments of Other Long-term Debt	(375)	0	(479)	0
Payments for Derivative Instrument, Financing Activities	(141)	0	(198)	0
Proceeds from (Repayments of) Other Long-term Debt	3,421	0	9,119	0
Proceeds from debt issuance	0	0	5,500	0
Repayments of Debt	0	0	(750)	0
Proceeds from Issuance of Long-term Debt	11,123	0	20,611	0
Change in restricted cash	0	75	75	75
Proceeds from exercise of stock options	0	193	77	533
Purchase of treasury stock	(308)	(2,354)	(321)	(2,365)
Payment of debt issuance costs	0	0	(621)	(1,031)
Net cash provided by (used in) financing activities	13,666	(2,523)	32,725	(3,764)
Net (decrease) increase in cash and cash equivalents	(42,073)	(57,319)	3,867	13,675
Cash and cash equivalents, beginning of period	170,262	181,641	124,322	110,647
Cash and cash equivalents, end of period	128,189	124,322	128,189	124,322
Cash paid during the period:
Interest paid	279	8	495	41
Taxes paid	479	72	680	148
Non-cash investing and financing activities:
Fixed assets, including internal-use software and website development, costs financed through accounts payable and accrued liabilities	6,181	2,659	6,181	2,659
Equipment acquired under capital lease obligations	0	362	0	687
Capitalized interest cost	39	39	157	65
Acquisition of businesses through stock issuance	0	0	18,149	0
Change in value of cash flow hedge	$ 1,594	$ 1,141	$ 1,718	$ 2,149