Short And Long-Term Debt (Narrative) (Details) (USD $)	12 Months Ended					12 Months Ended	1 Months Ended			12 Months Ended										12 Months Ended
	Dec. 31, 2013 customer	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Interest Rate Swap [Member]	Dec. 31, 2012 Interest Rate Swap [Member]	Dec. 31, 2013 Federal Funds Rate [Member]	Mar. 31, 2014 Subsequent Event [Member]	Feb. 28, 2014 Subsequent Event [Member]	Dec. 31, 2013 Term Loan [Member]	Dec. 31, 2013 Eligibility Percentage For Two Specific Customers [Member]	Dec. 31, 2013 Minimum [Member] Interest Rate Swap [Member]	Dec. 31, 2013 Minimum [Member] London Interbank Offered Rate (LIBOR) [Member]	Dec. 31, 2013 Minimum [Member] Federal Funds Rate [Member]	Dec. 31, 2013 Maximum [Member] Interest Rate Swap [Member]	Dec. 31, 2013 Maximum [Member] London Interbank Offered Rate (LIBOR) [Member]	Dec. 31, 2013 Maximum [Member] Federal Funds Rate [Member]	Dec. 31, 2013 Revolving Credit Facility [Member]	Dec. 31, 2012 Revolving Credit Facility [Member]	Dec. 31, 2013 Letters Of Credit [Member]	Dec. 31, 2013 Oversea Chinese Banking Corporation Ltd. Line of Credit [Member]	Dec. 31, 2012 Oversea Chinese Banking Corporation Ltd. Line of Credit [Member]	Dec. 31, 2013 Oversea Chinese Banking Corporation Ltd. Line of Credit [Member] Minimum [Member]	Dec. 31, 2013 Oversea Chinese Banking Corporation Ltd. Line of Credit [Member] Maximum [Member]
Short And Long-Term Debt [Line Items]
Credit facility, borrowing capacity																	$ 8,000,000		$ 200,000	$ 2,169,000
Loan amount									4,000,000
Debt instrument maturity date	Feb. 28, 2018			Aug. 13, 2014
Eligible accounts receivable borrowing percentage	80.00%							85.00%		90.00%
Number of specific customers with 90% borrowing percentage	2
Basis spread on variable rate of debt instruments						0.50%					4.33%	2.75%	0.00%	4.62%	4.00%	1.25%						0.75%	2.50%
Line of credit facility, Non-use fee percentage																	0.25%
Credit facility interest rate	4.30%	4.52%	3.93%																	3.95%	3.89%
Amount outstanding																	4,450,000	4,360,000		1,281,000	1,795,000
Remaining borrowing capacity under credit facility																	1,682,000	2,689,000		888,000	639,000
Quarterly installment amounts				250,000			250,000
Percentage of proceeds from certain asset sales required to pay down term loan	100.00%
Amount considered debt default	50,000
Interest rate swap, notional amount				5,500,000
Other current liabilities				22,000	92,000
Increase in additional borrowings																				$ 736,000