Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
CASH FLOW FROM OPERATING ACTIVITIES
Net income (loss)	$ 29,434us-gaap_NetIncomeLoss	$ (646)us-gaap_NetIncomeLoss
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	3,464	3,815
Stock based compensation expense	767us-gaap_ShareBasedCompensation	1,457us-gaap_ShareBasedCompensation
Deferred income taxes	182us-gaap_DeferredIncomeTaxExpenseBenefit	544us-gaap_DeferredIncomeTaxExpenseBenefit
Other non-cash operating activities	130us-gaap_OtherNoncashExpense	326us-gaap_OtherNoncashExpense
Distribution in excess of equity in earnings and gain on sale from equity investment	(49,776)	(5,729)
Loss on disposal		447us-gaap_RestructuringCharges
Changes in assets and liabilities, net of effects of business acquisitions:
Trade and other receivables	58	64
Prepaid expenses and other assets	140	92
Accounts payable and accrued expenses	3	210
Accrued taxes	(947)	1,997
Pension and postretirement benefit obligations	274	(353)
Net cash (used in) provided by operating activities	(16,271)	2,224
CASH FLOW FROM INVESTING ACTIVITIES
Capital expenditures	(274)us-gaap_PaymentsForCapitalImprovements	(544)us-gaap_PaymentsForCapitalImprovements
Proceeds from sale of assets	33	550
Purchase of seat licenses and other intangibles	(117)altv_PaymentsToAcquireSeatLicenses	(471)altv_PaymentsToAcquireSeatLicenses
Proceeds received in excess of income from equity investments	49,776	5,729
Net cash provided by investing activities	49,418	5,264
CASH FLOW FROM FINANCING ACTIVITIES
Proceeds from debt	2,400us-gaap_ProceedsFromRepaymentsOfDebt	19,419us-gaap_ProceedsFromRepaymentsOfDebt
Repayments of debt and capital leases	(12,646)	(23,541)
Payment of fees for acquisition of debt		(63)us-gaap_PaymentsOfDebtIssuanceCosts
Dividends	(25)us-gaap_PaymentsOfDividends	(3,340)us-gaap_PaymentsOfDividends
Purchase of treasury stock	(465)us-gaap_ProceedsFromRepurchaseOfEquity	(126)us-gaap_ProceedsFromRepurchaseOfEquity
Net cash used in financing activities	(10,736)	(7,651)
Net increase (decrease) in cash and cash equivalents	22,411	(163)
Cash and cash equivalents at beginning of year	1,636	1,799
Cash and cash equivalents at end of year	24,047	1,636
Supplemental disclosure of cash flow information:
Interest paid	195us-gaap_InterestPaid	572us-gaap_InterestPaid
Income taxes paid (received)	17,509us-gaap_IncomeTaxesPaidNet	(910)us-gaap_IncomeTaxesPaidNet
Supplemental disclosure of non-cash investing and financing activities:
Capitalization of loan financing costs		93altv_CapitalizationOfLoanFinancingCosts
Acquisition of equipment and seat licenses under capital leases	444altv_CapitalLeases	357altv_CapitalLeases
Seat licenses acquired, but not paid	$ 188altv_UnpaidLicensesAcquired

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Period Type:	duration

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt and payment of capital lease obligations.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4(b))

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 5.P.3)

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

+ Details

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Period Type:	duration

- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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