Related-Party Transactions (Details Textual) (USD $)	6 Months Ended	12 Months Ended		33 Months Ended		3 Months Ended		6 Months Ended		1 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Dec. 31, 2009	Jun. 30, 2012	Apr. 30, 2012	Jun. 30, 2012 Beau Dietl and Associates [Member]	Jun. 30, 2011 Beau Dietl and Associates [Member]	Jun. 30, 2012 Beau Dietl and Associates [Member]	Jun. 30, 2011 Beau Dietl and Associates [Member]	Apr. 30, 2012 Investee [Member]	Jan. 31, 2012 Director [Member]	Jun. 30, 2012 Director [Member]	Jun. 30, 2011 Director [Member]	Jun. 30, 2012 Director [Member]	Jun. 30, 2011 Director [Member]	Jun. 30, 2011 Member of Board [Member]	Jun. 30, 2011 Member of Board [Member]	Jun. 30, 2012 Scanner Manufacturers [Member]	Jun. 30, 2011 Scanner Manufacturers [Member]	Jun. 30, 2012 Scanner Manufacturers [Member]	Jun. 30, 2011 Scanner Manufacturers [Member]	Dec. 31, 2011 Scanner Manufacturers [Member]
Equity Method Investment, Ownership Percentage	15.00%			15.00%
Related Party Transaction, Purchases from Related Party																		$ 2,414,000	$ 2,287,000	$ 4,753,000	$ 4,826,000
Due to Related Parties																		283,000		283,000		1,014,000
Revenue from Related Parties	11,000
Related Party Transaction, Date		Oct. 31, 2011
Related Party Transaction, Amounts of Transaction											4,000	12,000	12,000	24,000	24,000	33,000	46,000
Legal Services Agreement Entered Date			Sep. 15, 2009
Related Party Transaction, Description of Transaction				On September 15, 2009, DCT entered into a legal services agreement (Agreement) with Jody R. Samuels, a director of the Company. Pursuant to the Agreement, Mr. Samuels will provide certain legal services to us which will consist of assisting the Company in (i) the preparation of its periodic and other filings with the Securities and Exchange Commission (SEC), including proxy statements, special and annual meetings of shareholders, (ii) the negotiation of financing and corporate development transactions, (iii) preparation and review of documentation related to financing arrangements and corporate development transactions, (iv) preparing registration statements, and responding to any SEC inquiries/comment letters, (v) documenting corporate governance policies and procedures, and (vi) any other legal matters reasonably within the legal expertise of Mr. Samuels.
Related Party Costs	10,000
Licence Agreement Entered Date										April 2010
Amortization Over Period in Selling General and Administrative Expense								50,000
Rent Expense						7,000	7,000	13,000	13,000
Payment for Licence Fees								50,000
Extention of Licence Period		1 year
Cost of Extention of License		$ 12,500			$ 12,500
Further Extention Of Amended License	April 2013