Condensed Consolidated Balance Sheets (unaudited) (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Stockholders' equity:
Series A Preferred stock, par value (in dollars per share)	$ 0.50	$ 0.50
Series A Preferred stock, authorized (in shares)	700,000us-gaap_PreferredStockSharesAuthorized	700,000us-gaap_PreferredStockSharesAuthorized
Series A Preferred stock, outstanding (in shares)	0us-gaap_PreferredStockSharesOutstanding	0us-gaap_PreferredStockSharesOutstanding
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, authorized (in shares)	10,000,000us-gaap_CommonStockSharesAuthorized	10,000,000us-gaap_CommonStockSharesAuthorized
Common stock, issued (in shares)	7,074,209us-gaap_CommonStockSharesIssued	7,062,209us-gaap_CommonStockSharesIssued
Common stock, outstanding (in shares)	6,739,712us-gaap_CommonStockSharesOutstanding	6,730,622us-gaap_CommonStockSharesOutstanding
Treasury stock, shares (in shares)	334,497us-gaap_TreasuryStockShares	331,587us-gaap_TreasuryStockShares

Face amount or stated value per share of common stock.

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