Commitments and Contingencies (Details) (USD $)	3 Months Ended		6 Months Ended		1 Months Ended	3 Months Ended	6 Months Ended	1 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jul. 31, 2014 Subsequent event [Member]	Jun. 30, 2014 Pennsylvania [Member]	Jun. 30, 2014 Pennsylvania [Member]	Jul. 31, 2014 Pennsylvania [Member] Subsequent event [Member] installment	Apr. 30, 2014 New Jersey [Member]	Jun. 30, 2014 New Jersey [Member]
Long-term Purchase Commitment [Line Items]
Operating lease payments	$ 154,000	$ 193,000	$ 319,000	$ 384,000
Operating leases, rent expense (per month)					7,000		15,000
Impairment of office lease						0	225,000
Accrued expense, impairment of office lease						159,000	159,000
Operating lease, term					64 months
Short-term operating leases, rent expense									115,000
Future minimum lease commitments	1,880,000		1,880,000							46,000
Operating lease, contract termination payment								$ 150,000
Number of installment payments, office lease termination								2