Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income	$ 33,675	$ 17,825
Adjustments to reconcile net income to net cash used for operating activities:
Depreciation and amortization	6,327	6,129
Accretion of investment discount	(194)	(207)
Provision for accounts receivable allowances	4,113	2,048
Deferred tax provision	245	1,409
Share-based compensation expense	1,161	1,235
Gain on bargain purchases	(20,087)	0
Loss on sale of assets	52	15
Changes in assets and liabilities:
Accounts receivable	(62,763)	(38,974)
Inventory	(1,486)	(1,588)
Other assets	3,125	635
Accounts payable	3,255	4,498
Other accrued liabilities	6,975	5,602
Total adjustments	(59,277)	(19,198)
Net cash used for operating activities	(25,602)	(1,373)
Cash flows from investing activities:
Maturities of investment securities	60,000	70,000
Purchase of held-to-maturity investment securities	0	(59,683)
Purchase of businesses	(15,039)	0
Purchase of property, plant and equipment	(4,037)	(5,058)
Purchase of intangibles	(100)	0
Proceeds from sale of fixed assets	311	23
Net cash provided by investing activities	41,135	5,282
Cash flows from financing activities:
Dividends paid	(5,453)	(4,953)
Purchase of treasury stock	0	(10,000)
Exercise of stock options, net of tax withholdings	124	122
Payments for tax withholding on net restricted stock settlements	(527)	(518)
Tax effect on stock awards	277	259
Net cash used for financing activities	(5,579)	(15,090)
Effect of exchange rate changes on cash	188	0
Net increase (decrease) in cash and cash equivalents	10,142	(11,181)
Cash and cash equivalents at beginning of period	19,927	36,429
Cash and cash equivalents at end of period	$ 30,069	$ 25,248