Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 3,934	$ 3,681
Trade and other receivables, less allowance for doubtful accounts of $270 and $369	60,589	71,563
Contract assets	116,341	121,778
Inventories	70,970	71,029
Prepaid expenses and other	9,007	10,689
Total current assets	260,841	278,740
Property and equipment, less accumulated depreciation and amortization of $120,052 and $117,856	134,419	133,166
Operating lease right-of-use assets	91,641	93,124
Goodwill	55,504	55,504
Intangible assets, net	34,203	35,264
Other assets	5,771	5,542
Total assets	582,379	601,340
Current liabilities:
Current debt	10,756	10,756
Accounts payable	24,885	26,968
Accrued liabilities	24,296	30,957
Contract liabilities	25,794	17,456
Current portion of operating lease liabilities	4,627	4,702
Total current liabilities	90,358	90,839
Borrowings on line of credit	62,617	83,696
Operating lease liabilities	88,326	89,472
Deferred income taxes	12,045	11,402
Other long-term liabilities	7,956	7,657
Total liabilities	261,302	283,066
Commitments and contingencies (Note 6)
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, 9,998,292 and 9,927,360 shares issued and outstanding as of March 31, 2023 and December 31, 2022, respectively	100	99
Additional paid-in-capital	128,478	127,911
Retained earnings	193,415	191,053
Accumulated other comprehensive loss	(916)	(789)
Total stockholders’ equity	321,077	318,274
Total liabilities and stockholders’ equity	$ 582,379	$ 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).