The increase in the fair value of plan assets from contributions made by the employer.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)(3)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Name:	us-gaap_DefinedBenefitPlanContributionsByEmployer
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

401(K) Plan (Details) (USD $)	9 Months Ended	12 Months Ended
401(K) Plan (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2012 Maximum [Member]	Dec. 31, 2012 Safe Harbor Plan [Member]	Dec. 31, 2011 Safe Harbor Plan [Member] Maximum [Member]
Defined Contribution Plan, Requisite Service Period	1 year
401(k) Plan (Textual) [Abstract]
Percentage of employee salaries paid as contribution		3.00%
Safe harbor contributions by Company			$ 2,000		$ 8,000
401(k) Plan required eligibility service period				one year of service with the Company
Defined Contribution Plan, Employer Discretionary Contribution Amount, Percent	3.00%