CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and temporary investments	$ 27,236	$ 27,037
Accounts receivable, net of allowance for doubtful accounts of $1,208 and $1,112 at June 30, 2019 and December 31, 2018, respectively	197,760	149,142
Inventories, net	90,973	93,767
Prepaid expenses	5,884	3,272
Total current assets	321,853	273,218
NONCURRENT ASSETS:
Property, plant and equipment, net	87,004	82,850
Right-of-use assets - operating leases	1,547
Goodwill	11,619	11,619
Other assets	527	497
TOTAL ASSETS	422,550	368,184
CURRENT LIABILITIES:
Accounts payable	129,449	98,220
Accrued liabilities	26,763	24,863
Current portion of operating lease obligation	362
Current portion of finance lease obligation	21	20
Long-term obligations due within one year	479	285
Total current liabilities	157,074	123,388
NONCURRENT LIABILITIES
Long-term obligations	20,079	15,475
Noncurrent portion of operating lease obligation	1,182
Noncurrent portion of finance lease obligation	47	58
Deferred income tax liabilities	1,864	1,700
Total liabilities	180,246	140,621
COMMITMENTS AND CONTINGENCIES (Notes 6 and 7)
SHAREHOLDERS’ EQUITY:
Preferred stock, $0.01 par value; 5,000,000 shares authorized, none issued or outstanding
Common stock, $0.01 par value; 100,000,000 shares authorized, 11,400,102 and 11,394,546, outstanding at June 30, 2019 and December 31, 2018, respectively	114	114
Additional paid-in capital	151,055	150,905
Accumulated surplus	96,598	81,354
Accumulated other comprehensive loss	(5,463)	(4,810)
Total shareholders’ equity	242,304	227,563
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 422,550	$ 368,184