Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 4,262	$ 4,068
Trade and other receivables, net of allowance of $159 and $121	52,396	47,645
Contract assets	135,715	120,516
Inventories	96,481	91,229
Prepaid expenses and other	7,840	9,026
Total current assets	296,694	272,484
Property and equipment, less accumulated depreciation and amortization of $129,510 and $126,359	145,323	143,955
Operating lease right-of-use assets	86,978	88,155
Goodwill	55,504	55,504
Intangible assets, net	30,066	31,074
Other assets	6,735	6,709
Total assets	621,300	597,881
Current liabilities:
Current debt	10,756	10,756
Accounts payable	26,365	31,142
Accrued liabilities	22,489	27,913
Contract liabilities	18,596	21,450
Current portion of operating lease liabilities	5,067	4,933
Total current liabilities	83,273	96,194
Borrowings on line of credit	89,863	54,485
Operating lease liabilities	84,211	85,283
Deferred income taxes	10,863	10,942
Other long-term liabilities	10,476	10,617
Total liabilities	278,686	257,521
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, 9,872,897 and 9,985,580 shares issued and outstanding as of March 31, 2024 and December 31, 2023, respectively	99	100
Additional paid-in-capital	126,057	129,095
Retained earnings	217,363	212,125
Accumulated other comprehensive loss	(905)	(960)
Total stockholders’ equity	342,614	340,360
Total liabilities and stockholders’ equity	$ 621,300	$ 597,881

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).