Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 4,152	$ 3,681
Trade and other receivables, less allowance for doubtful accounts of $434 and $369	63,419	71,563
Contract assets	122,359	121,778
Inventories	84,579	71,029
Prepaid expenses and other	4,919	10,689
Total current assets	279,428	278,740
Property and equipment, less accumulated depreciation and amortization of $121,722 and $117,856	137,506	133,166
Operating lease right-of-use assets	91,106	93,124
Goodwill	55,504	55,504
Intangible assets, net	33,160	35,264
Other assets	6,034	5,542
Total assets	602,738	601,340
Current liabilities:
Current debt	10,756	10,756
Accounts payable	26,721	26,968
Accrued liabilities	25,770	30,957
Contract liabilities	26,990	17,456
Current portion of operating lease liabilities	4,887	4,702
Total current liabilities	95,124	90,839
Borrowings on line of credit	70,069	83,696
Operating lease liabilities	87,789	89,472
Deferred income taxes	11,834	11,402
Other long-term liabilities	9,321	7,657
Total liabilities	274,137	283,066
Commitments and contingencies (Note 7)
Stockholders’ equity:
Preferred stock, $.01 par value, 10,000,000 shares authorized, none issued or outstanding	0	0
Common stock, $.01 par value, 15,000,000 shares authorized, 10,014,196 and 9,927,360 shares issued and outstanding as of June 30, 2023 and December 31, 2022, respectively	100	99
Additional paid-in-capital	128,562	127,911
Retained earnings	200,863	191,053
Accumulated other comprehensive loss	(924)	(789)
Total stockholders’ equity	328,601	318,274
Total liabilities and stockholders’ equity	$ 602,738	$ 601,340

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).