Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 31,014	$ 6,677
Trade and other receivables, less allowance for doubtful accounts of $801 and $660	38,026	34,394
Contract assets	91,186	74,271
Inventories	30,654	39,376
Prepaid expenses and other	4,159	4,795
Total current assets	195,039	159,513
Property and equipment, net	99,631	103,447
Other assets	15,575	8,390
Total assets	310,245	271,350
Current liabilities:
Accounts payable	15,493	19,784
Accrued liabilities	13,792	7,963
Contract liabilities	12,281	3,745
Total current liabilities	41,566	31,492
Borrowings on line of credit		11,464
Deferred income taxes	4,265	68
Other long-term liabilities	16,256	9,736
Total liabilities	62,087	52,760
Commitments and contingencies (Note 15)
Stockholders’ equity:
Preferred stock, $.01 par value, 10,000,000 shares authorized, none issued or outstanding
Common stock, $.01 par value, 15,000,000 shares authorized, 9,746,979 and 9,735,055 shares issued and outstanding	97	97
Additional paid-in-capital	120,544	118,835
Retained earnings	129,331	101,194
Accumulated other comprehensive loss	(1,814)	(1,536)
Total stockholders’ equity	248,158	218,590
Total liabilities and stockholders’ equity	$ 310,245	$ 271,350

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).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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).