Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 29,173	$ 34,052
Receivables, less allowance for doubtful accounts of $602 at June 30, 2015 and $502 at December 31, 2014	19,518	16,470
Inventories	12,832	12,893
Prepaid expenses	1,664	664
Refundable income taxes	479	3,192
Deferred income taxes	1,155	1,142
Total current assets	64,821	68,413
Property, plant and equipment	86,088	75,823
Less accumulated depreciation and amortization	(42,966)	(40,980)
Net property, plant and equipment	43,122	34,843
Goodwill	7,322	7,322
Intangible assets, net	794	953
Other assets	2,203	2,159
Total assets	118,262	113,690
Current liabilities:
Accounts payable	4,473	5,398
Accrued expenses	6,146	5,222
Current installments of long-term debt	1,002	993
Total current liabilities	11,621	11,613
Long-term debt, excluding current installments	1,368	1,873
Deferred income taxes	3,795	3,588
Retirement and other liabilities	1,553	1,624
Total liabilities	$ 18,337	$ 18,698
Commitments and contingencies
Stockholders' equity:
Preferred stock, $.01 par value. Authorized 1,000,000 shares; zero shares issued or outstanding
Common stock, $.01 par value. Authorized 20,000,000 shares; issued and outstanding 7,124,850 at June 30, 2015 and 7,068,815 at December 31, 2014	$ 71	$ 71
Additional paid-in capital	23,139	22,132
Retained earnings	76,715	72,789
Total stockholders' equity	99,925	94,992
Total liabilities and stockholders' equity	$ 118,262	$ 113,690

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).