BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Mar. 31, 2013
Supplemental Cash Flow Information
Interest paid			$ 1,176	$ 2,971
Income taxes paid, net of refunds			3,874
Income tax refunds, net of taxes paid				86
Numerator:
Net income	10,630	6,709	14,230	6,261
Denominator:
Weighted average number of common shares outstanding	9,679,309	9,863,363	9,657,781	10,017,546
Dilutive options and stock awards (in shares)	104,808	35,338	72,821	57,942
Diluted weighted average number of common shares outstanding	9,784,117	9,898,701	9,730,602	10,075,488
Net earnings per share
Basic (in dollars per share)	$ 1.10	$ 0.68	$ 1.47	$ 0.62
Diluted (in dollars per share)	$ 1.09	$ 0.68	$ 1.46	$ 0.62
Options excluded from the computation of diluted net earnings per share (in shares)	837,500	1,063,956	929,000	1,065,427
Fair Value of Financial Instruments
Variable rate debt obligations	60,842		60,842		73,793
Fixed rate debt obligations	36,702		36,702		49,891
Foreign Currency
Net foreign currency translation loss (gain) recorded in other expense (income)	233	(146)	167	(213)
Income Taxes
Decrease in reserve for unrecognized tax benefits	$ 2,200		$ 2,200