CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jul. 31, 2016	Jan. 31, 2016
CURRENT ASSETS
Cash and cash equivalents	$ 162,855	$ 160,909
Short-term investments	220,297	114,098
Accounts receivable, net	32,706	64,185
Costs and estimated earnings in excess of billings	3,052	4,078
Prepaid expenses and other current assets	5,004	7,342
TOTAL CURRENT ASSETS	423,914	350,612
Property, plant and equipment, net	13,122	12,308
Goodwill	34,780	37,405
Intangible assets, net	8,738	9,344
Deferred income taxes	435
Other assets	105	122
TOTAL ASSETS	481,094	409,791
CURRENT LIABILITIES
Accounts payable	60,207	46,395
Accrued expenses	42,362	35,454
Billings in excess of costs and estimated earnings	121,130	105,863
TOTAL CURRENT LIABILITIES	223,699	187,712
Deferred income taxes		224
TOTAL LIABILITIES	223,699	187,936
COMMITMENTS AND CONTINGENCIES (Note 11)
STOCKHOLDERS' EQUITY
Preferred stock, par value $0.10 per share - 500 shares authorized; no shares issued and outstanding
Common stock, par value $0.15 per share - 30,000 shares authorized; 15,035 and 14,840 shares issued at July 31 and January 31, 2016, respectively; 15,032 and 14,836 shares outstanding at July 31 and January 31, 2016, respectively	2,255	2,226
Additional paid-in capital	122,732	117,274
Retained earnings	131,485	99,581
Accumulated other comprehensive losses	(431)	(565)
TOTAL STOCKHOLDERS' EQUITY	256,041	218,516
Noncontrolling interests	1,354	3,339
TOTAL EQUITY	257,395	221,855
TOTAL LIABILITIES AND EQUITY	$ 481,094	$ 409,791