UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Sales of product and services	$ 247,037	$ 234,282
Financing revenue	10,760	7,900
Fee and other income	1,520	2,542
TOTAL REVENUES	259,317	244,724
COSTS AND EXPENSES
Cost of sales, product and services	203,330	194,391
Direct lease costs	3,253	2,243
Total cost of sales	206,583	196,634
Professional and other fees	3,238	3,113
Salaries and benefits	30,682	26,354
General and administrative expenses	5,001	4,655
Interest and financing costs	460	405
Total expenses	39,381	34,527
TOTAL COSTS AND EXPENSES	245,964	231,161
EARNINGS BEFORE PROVISION FOR INCOME TAXES	13,353	13,563
PROVISION FOR INCOME TAXES	5,503	5,501
NET EARNINGS	$ 7,850	$ 8,062
NET EARNINGS PER COMMON SHARE-BASIC (In dollars per share)	$ 0.98	$ 1.01
NET EARNINGS PER COMMON SHARE-DILUTED (In dollars per share)	$ 0.97	$ 1.00
WEIGHTED AVERAGE SHARES OUTSTANDING-BASIC (In shares)	7,913,937	7,720,535
WEIGHTED AVERAGE SHARES OUTSTANDING-DILUTED (In shares)	7,984,681	7,790,811