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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 4,148 | $ 4,477
Accounts receivable-trade, net of allowance of $288 and $225 at December 31, 2013 and December 31, 2012 | 11,480 | 9,731
Inventories, net | 5,216 | 5,616
Cost and estimated earnings in excess of billings on uncompleted contracts | 5,312 | 2,205
Prepaid expenses and other current assets | 439 | 318
Total current assets | 26,595 | 22,347
Property, plant and equipment, net | 6,040 | 4,922
Advances to and investments in foreign joint ventures | 13,033 | 11,408
Other assets | 168 | 297
Total assets | 45,836 | 38,974
Current liabilities: |  |
Accounts payable | 5,850 | 4,438
Accrued payroll and benefits | 1,911 | 1,519
Other accrued expenses | 411 | 513
Billings in excess of costs and estimated earnings on uncompleted contracts | 3,021 | 3,576
Short-term notes payable |  | 54
Other current liabilities | 120 | 9
Total current liabilities | 11,313 | 10,109
Notes payable | 500 | 500
Deferred income taxes | 3,541 | 3,058
Deferred compensation | 211 | 122
Total liabilities | 15,565 | 13,789
Commitments and contingencies (see note 15) |  |
Convertible preferred stock: |  |
Redeemable convertible preferred stock, Series A, net of discount of $764 at December 31, 2013 and $806 at December 31, 2012; $0.001 par value, 1,000,000 shares authorized, issued and outstanding at December 31, 2013, and 2012 | 4,236 | 4,194
Stockholders’ equity: |  |
Common stock; $0.001 par value, 50,000,000 shares authorized, 8,008,759 and 7,919,032 shares issued and outstanding at December 31, 2013 and December 31, 2012 | 8 | 8
Treasury stock, at cost (49,863 shares at December 31, 2013 and 20,222 shares at December 31, 2012) | (238) | (92)
Additional paid-in capital | 10,494 | 9,597
Accumulated other comprehensive income | 983 | 900
Retained earnings; including accumulated statutory reserves in equity method investments of $1,857 and $1,620 at December 31, 2013 and December 31, 2012 | 14,788 | 10,578
Total stockholders’ equity | 26,035 | 20,991
Total liabilities, preferred stock and stockholders’ equity | $ 45,836 | $ 38,974

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