Related Party Transactions Narrative (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Related Party Transaction [Line Items]
Revenue, related parties	$ 210,000	$ 296,000
Accounts receivable, related parties, current	32,000	42,000
Accounts payable, related parties	13,000	0
Director Affiliated Entity [Member] | ABM Industries, Inc. (ABM) [Member]
Related Party Transaction [Line Items]
Revenue, related parties	210,000	296,000
Accounts receivable, related parties, current	32,000
Director [Member]
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction, monthly	12,500
Related party transaction, amounts of transaction	150,000	150,000
Accounts payable, related parties	12,500
Shareholder Affiliated Entity [Member]
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction	393,000	144,000
Accounts payable, related parties	0
Wife of President and CEO (Nancy K. Holst) [Member]
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction	15,000
Due to Other Related Parties	$ 15,000