Consolidated Statements of Cash Flows - USD ($)	9 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Operating activities:
Net income	$ 13,690,000	$ 25,193,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	13,872,000	10,605,000
Deferred income taxes and related valuation allowance	290,000	(1,273,000)
Net gain on sale of real estate, investments, and other	(379,000)	(1,233,000)
Stock-based compensation	3,368,000	2,991,000
Amortization of deferred financing costs and discount on debt	428,000	652,000
Insured Event, Gain (Loss)		250,000
Changes in operating assets and liabilities, net of effects of business acquisitions:
Trade accounts receivable	13,451,000	21,633,000
Inventories	(790,000)	(8,470,000)
Prepaid expenses	2,100,000	(1,012,000)
Other assets	3,249,000	(531,000)
Trade accounts payable	(9,713,000)	(9,056,000)
Increase (Decrease) in Accrued Liabilities	2,856,000	756,000
Non-current liabilities	(9,520,000)	(10,655,000)
Net cash provided by (used for) operating activities	32,902,000	29,850,000
INVESTING ACTIVITIES:
Proceeds from sale of marketable securities	5,732,000	2,585,000
Purchases of marketable securities	(4,239,000)	(673,000)
Capital expenditures	(15,518,000)	(11,343,000)
Payments to Acquire Businesses, Net of Cash Acquired	(182,467,000)	(19,931,000)
Proceeds from Sales of Assets, Investing Activities		16,000
Net cash provided by (used for) investing activities	(196,492,000)	(29,346,000)
FINANCING ACTIVITIES:
Proceeds from exercise of stock options	242,000	1,362,000
Net payments under lines-of-credit	164,057,000
Repayment of debt	(9,854,000)	(1,099,000)
Change in ESOP guarantee and other	(890,000)	(800,000)
Increase (Decrease) in Restricted Cash		(5,819,000)
Dividends, Cash	(2,408,000)	(2,392,000)
Net cash provided by (used for) financing activities	151,147,000	(8,748,000)
Effect of exchange rate changes on cash	1,268,000	(1,577,000)
Net change in cash and cash equivalents	(11,175,000)	(9,821,000)
Cash and cash equivalents at beginning of period	63,056,000	112,309,000
Cash and cash equivalents at end of period	51,881,000	102,488,000
Supplementary cash flow data:
Interest paid	4,859,000	6,578,000
Income taxes paid (refunded), net	$ 3,315,000	$ 9,096,000