Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Jun. 30, 2018
Current assets:
Cash and cash equivalents	$ 71,489	$ 64,057
Accounts receivable, less allowances (December 31, 2018— $6,249 and June 30, 2018—$6,327)	203,574	203,388
Costs and estimated earnings in excess of billings on uncompleted contracts	72,694	76,632
Inventories	7,961	5,152
Income taxes receivable	1,543	3,359
Other current assets	7,578	4,458
Total current assets	364,839	357,046
Property, plant and equipment at cost:
Land and buildings	40,517	40,424
Construction equipment	89,321	89,036
Transportation equipment	48,805	48,339
Office equipment and software	42,297	41,236
Construction in progress	3,040	1,353
Property, plant and equipment at cost, gross	223,980	220,388
Accumulated depreciation	(152,387)	(147,743)
Property, plant and equipment at cost, net	71,593	72,645
Goodwill	93,263	96,162
Other intangible assets	21,096	22,814
Deferred income taxes	5,598	4,848
Other assets	13,163	4,518
Total assets	569,552	558,033
Current liabilities:
Accounts payable	90,712	79,439
Billings on uncompleted contracts in excess of costs and estimated earnings	115,366	120,740
Accrued wages and benefits	24,735	24,375
Accrued insurance	8,921	9,080
Income taxes payable	0	7
Other accrued expenses	4,698	4,824
Total current liabilities	244,432	238,465
Deferred income taxes	1,272	429
Other liabilities	258	296
Total liabilities	245,962	239,190
Commitments and contingencies
Matrix Service Company stockholders' equity:
Common stock—$.01 par value; 60,000,000 shares authorized; 27,888,217 shares issued as of December 31, 2018 and June 30, 2018; 26,778,398 and 26,853,823 shares outstanding as of December 31, 2018 and June 30, 2018	279	279
Additional paid-in capital	131,889	132,198
Retained earnings	217,731	211,494
Accumulated other comprehensive loss	(8,079)	(7,411)
Matrix Service Company stockholders' equity	341,820	336,560
Less: Treasury stock, at cost — 1,109,819 shares as of December 31, 2018, and 1,034,394 shares as of June 30, 2018	(18,230)	(17,717)
Total stockholders' equity	323,590	318,843
Total liabilities and stockholders’ equity	$ 569,552	$ 558,033