Consolidated Balance Sheets (Parentheticals) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Stockholders' Equity:
Blank check preferred stock, par value	$ 0.01	$ 0.01
Blank check preferred stock, authorized shares	5,000,000us-gaap_PreferredStockSharesAuthorized	5,000,000us-gaap_PreferredStockSharesAuthorized
Blank check preferred stock, issued shares	0.00us-gaap_PreferredStockSharesIssued	0.00us-gaap_PreferredStockSharesIssued
Blank check preferred stock, outstanding shares	0us-gaap_PreferredStockSharesOutstanding	0us-gaap_PreferredStockSharesOutstanding
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized shares	75,000,000us-gaap_CommonStockSharesAuthorized	75,000,000us-gaap_CommonStockSharesAuthorized
Common stock, issued shares	28,533,836us-gaap_CommonStockSharesIssued	27,991,242us-gaap_CommonStockSharesIssued
Common stock, outstanding shares	28,517,195us-gaap_CommonStockSharesOutstanding	27,980,849us-gaap_CommonStockSharesOutstanding

Face amount or stated value per share of common stock.

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