UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Sales of product and services	$ 234,282	$ 169,321
Financing revenue	7,900	7,434
Fee and other income	2,542	2,144
Total revenues	244,724	178,899
COSTS AND EXPENSES
Cost of sales, product and services	194,391	140,674
Direct lease costs	2,243	2,096
Total cost of sales	196,634	142,770
Professional and other fees	3,113	2,425
Salaries and benefits	26,354	23,006
General and administrative expenses	4,655	4,033
Interest and financing costs	405	382
Total expenses	34,527	29,846
TOTAL COSTS AND EXPENSES	231,161	172,616
EARNINGS BEFORE PROVISION FOR INCOME TAXES	13,563	6,283
PROVISION FOR INCOME TAXES	5,501	2,580
NET EARNINGS	$ 8,062	$ 3,703
NET EARNINGS PER COMMON SHARE-BASIC (In dollars per share)	$ 1.04	$ 0.45
NET EARNINGS PER COMMON SHARE-DILUTED (In dollars per share)	$ 1.02	$ 0.44
WEIGHTED AVERAGE SHARES OUTSTANDING-BASIC (In shares)	7,720,535	8,307,389
WEIGHTED AVERAGE SHARES OUTSTANDING-DILUTED (In shares)	7,897,906	8,489,703