Commitments and Contingencies (Narrative) (Details)		1 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended
	Jul. 23, 2015 USD ($)	Aug. 31, 2014 USD ($)	Mar. 31, 2014 USD ($)	Jun. 30, 2014 USD ($)	Dec. 31, 2015 USD ($) facility	Dec. 31, 2014 USD ($)
Long-term Purchase Commitment [Line Items]
Operating leases, number of facilities | facility					2
Operating lease payments					$ 342,000	$ 671,000
Operating lease, contract termination payment		$ 150,000
Pennsylvania
Long-term Purchase Commitment [Line Items]
Other asset impairment charges			$ 253,000
Colorado | Comerica Bank
Long-term Purchase Commitment [Line Items]
Letters of credit outstanding, amount					$ 83,000
Other Capitalized Property Plant and Equipment | Pennsylvania
Long-term Purchase Commitment [Line Items]
Impairment of long-lived assets to be disposed of				$ 101,000
UTC Associates Inc. | Monetary Damages, Unpaid Services
Long-term Purchase Commitment [Line Items]
Loss contingency, damages sought, value	$ 2,107,000
UTC Associates Inc. | Monetary Damages, Breach of Alleged Guaranteed Minimum Provision
Long-term Purchase Commitment [Line Items]
Loss contingency, damages sought, value	1,107,000
UTC Associates Inc. | Monetary Damages, Breach of Alleged Exclusivity Provision
Long-term Purchase Commitment [Line Items]
Loss contingency, damages sought, value	$ 1,000,000