Consolidated Statements of Cash Flows (Parenthetical)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Consolidated Statements of Cash Flows
Issuance of shares of common stock to fund the Company's 401(k) matching contribution	21,826	32,666

Number of shares issued pursuant to the terms of a deferred compensation arrangement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (l)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Name:	us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration