Increased value of maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

No definition available.

Name:	ldl_LineOfCreditFacilityMaximumBorrowingCapacityIncreasedValue
Namespace Prefix:	ldl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Long-term Debt and Financing Arrangements Long-term Debt and Financing Arrangements (parenthetical) (Details) (USD $)	0 Months Ended	6 Months Ended
	Feb. 18, 2014	Jun. 30, 2014 Eurocurrency Rate [Member]	Jun. 30, 2014 Minimum [Member]	Jun. 30, 2014 Minimum [Member] Base Rate [Member]	Jun. 30, 2014 Minimum [Member] Eurocurrency Rate [Member]	Jun. 30, 2014 Maximum [Member]	Jun. 30, 2014 Maximum [Member] Base Rate [Member]	Jun. 30, 2014 Maximum [Member] Eurocurrency Rate [Member]	Jun. 30, 2014 Amended Credit Facility [Member]
Debt Instrument [Line Items]
Line Of Credit Facility Maximum Borrowing Capacity Increased Value	$ 100,000,000								$ 100,000,000
Debt Instrument, Basis Spread on Variable Rate		1.00%		0.15%	0.75%		1.00%	1.75%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage			0.20%			0.30%