Long-Term Debt, Line of Credit and Term Loan (Details) - USD ($) $ in Millions		12 Months Ended
	Aug. 04, 2016	Dec. 31, 2016	Jun. 08, 2018	Jun. 08, 2017	Jun. 08, 2012
Fifth Amended Credit Agreement [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Unused commitment fee percentage		0.30%
Fifth Amended Credit Agreement [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Unused commitment fee percentage		0.50%
Fifth Amended Credit Agreement [Member] | One-Month LIBOR [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate		1.00%
Fifth Amended Credit Agreement [Member] | One-Month LIBOR [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Margin rate		1.75%
Fifth Amended Credit Agreement [Member] | One-Month LIBOR [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Margin rate		3.00%
Fifth Amended Credit Agreement [Member] | Base Rate [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Margin rate		0.75%
Fifth Amended Credit Agreement [Member] | Base Rate [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Margin rate		2.00%
Fifth Amended Credit Agreement [Member] | Federal Funds Rate [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate		0.50%
Eighth Amendment to Fifth Amended Credit Agreement [Member]
Line of Credit Facility [Line Items]
Debt instrument, description	On August 4, 2016, we entered into the Eighth Amendment to the Fifth Amended Credit Agreement (the "Eighth Amendment"). The Eighth Amendment (1) extends the expiration date of the Company's revolving credit facility and the maturity date of the Company's term loan facility under the Fifth Amended Credit Agreement from June 8, 2017 to June 8, 2018 (the "Extended Maturity Date") and (2) amends the definition of "Consolidated EBITDA" to include an add-back for certain non-cash gains and losses and to take into account certain financial consequences of the sale by the Company of its TPHS business to Sharecare pursuant to the terms of the Purchase Agreement. The Eighth Amendment contemplated that some lenders might not agree to the Extended Maturity Date and preserved June 8, 2017 as the non-extended maturity date (the "Non-Extended Maturity Date") for such lenders. Lenders holding $45.3 million of the revolving commitments and $25.4 million of outstanding term loans as of August 4, 2016 did not consent to the Extended Maturity Date. On the Non-Extended Maturity Date, the revolving commitments of non-consenting revolving lenders will terminate and any outstanding term loans and revolving loans owed to non-consenting lenders must be paid in full. The outstanding revolving loans under the revolving credit facility held by consenting lenders must be paid in full on June 8, 2018. We are required to repay term loans in quarterly principal installments aggregating 2.500% of the original aggregate principal amount of the term loans ($5.0 million) during each of the remaining quarters prior to maturity on June 8, 2018, at which time the entire unpaid principal balance of the term loans held by consenting lenders is due and payable.
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Availability under the revolving credit facility under most restrictive covenant		$ 103.8
Revolving Credit Facility [Member] | Fifth Amended Credit Agreement [Member]
Line of Credit Facility [Line Items]
Initiation date		Jun. 08, 2012
Maximum borrowing capacity					$ 125.0
Expiration date		Jun. 08, 2017
Interest rate description		Borrowings under the Fifth Amended Credit Agreement generally bear interest at variable rates based on a margin or spread in excess of either (1) the one-month, two-month, three-month or six-month rate (or with the approval of affected lenders, nine-month or twelve-month rate) for Eurodollar deposits ("LIBOR", which may not be less than zero), or (2) the greatest of (a) the SunTrust Bank prime lending rate, (b) the federal funds rate plus 0.50% and (c) one-month LIBOR plus 1.00% (the "Base Rate"), as selected by the Company. The LIBOR margin varies between 1.75% and 3.00%, and the Base Rate margin varies between 0.75% and 2.00%, depending on our leverage ratio.
Commitment fee description		The Fifth Amended Credit Agreement also provides for an annual fee ranging between 0.30% and 0.50% of the unused commitments under the revolving credit facility.
Revolving Credit Facility [Member] | Eighth Amendment to Fifth Amended Credit Agreement [Member]
Line of Credit Facility [Line Items]
Expiration date	Jun. 08, 2018
Revolving commitments amount	$ 45.3
Revolving Credit Facility [Member] | Eighth Amendment to Fifth Amended Credit Agreement [Member] | Scenario, Forecast [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity			$ 79.7	$ 125.0
Letters of Credit Sub Facility [Member] | Fifth Amended Credit Agreement [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity					75.0
Swingline Sub Facility [Member] | Fifth Amended Credit Agreement [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity					20.0
Term Loan Facility [Member] | Fifth Amended Credit Agreement [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity					200.0
Amount outstanding					60.0
Term Loan Facility [Member] | Eighth Amendment to Fifth Amended Credit Agreement [Member]
Line of Credit Facility [Line Items]
Maturity date	Jun. 08, 2018
Long term debt outstanding	$ 25.4
Periodic payment, percentage of original principal amount	2.50%
Periodic payment, principal amount	$ 5.0
Uncommitted Incremental Accordion Facility [Member] | Fifth Amended Credit Agreement [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity					$ 100.0