Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income	$ 12,582	$ 9,276
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	556	531
Share based compensation	719	494
Deferred income taxes	(165)	(104)
Bad debt expense	32	28
(Increase) decrease in operating assets and increase in liabilities:
Accounts receivable	(171)	(279)
Inventories - finished goods	(1,709)	(2,804)
Prepaid income taxes	788
Prepaid expenses and other current assets	(396)	(494)
Accounts payable	5,908	984
Accrued expenses and other current liabilities	643	696
Income taxes payable	3,247	5,568
Net cash provided by operating activities	22,034	13,896
Cash flows from investing activities:
Purchases of property and equipment	(306)	(43)
Net cash used in investing activities	(306)	(43)
Cash flows from financing activities:
Dividends paid	(5,103)	(4,058)
Net cash used in financing activities	(5,103)	(4,058)
Net increase in cash and cash equivalents	16,625	9,795
Cash and cash equivalents, at beginning of period	77,936	58,730
Cash and cash equivalents, at end of period	94,561	68,525
Supplemental disclosure of cash flow information:
Dividends payable in accrued expenses	$ 288	$ 263